curly kale
olive oil
curry powder
Tuscan kale, Red Russian kale, beet greens and chard can all make gloriously crispy chips
Get them super, super, dry after they're washed.
Toss them in a little olive oil, salt, pepper and whatever other seasoning you feel like (we've had great success with curry powder, cayenne pepper and Old Bay, respectively).
Then you just put them in the oven at 350 degrees until they are done.